Machine for making spiral fly-traps.



UNITED STATES PATENT OFFICE.

FRANK C. CURTIS,

OF TROY, NEW YORK.

- MACHINE FOR MAKING SPIRAL FLY-TRAPS.

- Specification 61 Letters Patent.

Patented Mar. 25, 1919.

Application filed April 12, 1917. SerialNo. 161,687.

1 To all whom it may concern:

This invention relates to machines for winding into spiral form strips of material for various-purposes, and it is particudriven; and their movements are so timed that the portion of the strip which is left uncoated with adhesive, 13, 'by reason of the larly adapted for use in making spiral flytraps. 4

The principal object of the invention is to automatically maintain substantially uniduring the wind form tension on the strip ing operation.

Other objects with the following description.

The single figure of the drawing isa-ccm tral vertical longitudinal section of a flytra'p-winding machine made in accordance with my invention. Referring to the drawings wherein the invention is shown in preferred form, 1 is a ro-' tary spindle, provided with a slot, 2 adapted to receive the end 3 of a strip, 4, adapted to be wound into a spiral roll foruse-as a fly tra orthelike. v

he strip,4, passes from a, roll, 5, between .a pair of tens1on=rolls, 6 and 7, and thence 'over a mutilated roll, '8, around/a roll, 9.,

over a roll, 10, to the slotted spindle, 1.

The mutilated roll, 8,'has a portion of its cylindrical .surface removed at 11, the remaining portion ,of said roll being adapted to make peripheral contact with a roll, 12,

, ceives a coatmg'of which runs in a body of adhesive,.13, contained in a subjacent well or box, 14.

The roll, 10, has a segmental peripheral enlargement, 15, adapted to make peripheral contact with a roll, 16, which runs in a bod 17, of adhesive, contained in a subj acent we 1 or box, 18. v

The adhesive, 17, is a hard-dryin adhesive, as glue, adapted for use upon e ends of the strip which forms a fly-trap, while the adhesive, 13, is a (permanently sticky adhesive such as is use Theunmutilated ortion of the-roll,8, re 18 adhesive, 13, from its county of Rensselaer, and State of" 13, while the portion of said strip which passes over the mutilated portion, 11, of said will appear in connection "readily' break the strip.

' ferred to,and by the use of a machine of the character described, it is quite importantfor sticky fly-paper, and isapplied to the intermediate portions of a strip adapted for the manufacture of spiral coatin of adhesive, 17, from its contact with the ro 16.

As the strip, 4, passes from the'rolls, 6-7, over the mutilated roll, 8, that portion of the stri which engages the unmutilated portion of t e roll, 8, becomes coated with adhesive,

roll, 8, is left free from such coating of adhesive. f The rolls, 8, 9, 1.0, 12 and 16 are positively mutilation, 11, passes over the roll, 10, in

. contact with theperipheral enlargement, 15, .on said roll, which peripheral enlargement,

15, being coated with adhesive, 17 ,'-applies said adhesive, 17, to the opposite-side of that portion of the strip, 4, which is free from the enlargement, 15, on the roll, 10, at regular intervals to cut the strip, 4.

The cutter, 19, is so made as to not cut the strip, 4,-ent1rely across, but to cut or weaken the strip sufficiently 'so that the operator can In making fly-traps of the character rethat the body portion of the rolled-up strip should be Wound under a substantial y uniform tension, as otherwise the lengths of the strips for successive traps would vary and interfere with the timeliness of the operation of the enlargement, 15, on the roll, 10, and the cutter, 19.

The strip is held under tension between the rolls, 6-7, and the winding spindle, 1.

As the mutilated portion, 11, of the roll, 8 less slackness is formed in the strip, which tends to relieve the tension on the strip and permit the strip to be more loosely wound upon the split spindle, 1. I

As a means for taking up such slackness in the strip, 4, I haveshown the roll, 9,

pformed with a peripheral swell, 20, and the rolls, 8-9, are so timed in their movements that this swell, 20, forces the stri out of its normal 'path'during the interva when the is brought adjacent .to the strip, 4, more or' strip tends to become slack by reason of the mutilation, 11, in the roll, 8.

Any slackness in the strip, 4, which is produced by the mutilation, 11, of the roll, 8, is thus instantly taken up and compensated for by the outward displacement of the strip in its passage over the swell, 20, on the roll, v9. The tension upon the strip is thus maintained substantially uniform during the winding operation.

For certain purposes of the invention any known means may be employed for automatically intermittently displacing the strip, 4, to compensate for slackness formed therein by reason of the mutilation'of the roll, 8, which means is intermittently engageable with the strip.

What I claim as new and desire to secure by Letters Patent is 1. In a machine of the class described and in combination, a strip-rolling device; a tension for the strip; a rotatory mutilated adhesive-applying roll engageable with the strip between said tension and said striprolling device; and means intermittently engageable with the strip to displace the strip from-its normal path, said means being timed in its operation to so displace the strip as the mutilated ortion of said roll is brought adjacent to the strip.

2. In a machine of the class described and in combination, a strip-rolling device; a tension for the strip; a rotatory mutilated adhesive-applying .roll engageable with the strip between said tension and said striprolling device; and a rotatory roll having a lperipheral swell over which said strip passes etween said mutilated roll and said striprolling device, said rolls being so timed in their movements that said swell engages said strip as the mutilated portion of said mutilated roll is brought adjacent to the strip.

3. In a machine of the class described andin combination, a strip-rolling device; a tension for the strip; a rotatory mutilated ad hesive-applying roll engageable with the strip between said tension and said 'striprolling device; means intermittently engageable with the strip to displace the strip from its normal path; and a rotatory roll having an adhesive-applyin peripheral enlargement engageable with the strip, said rolls being so timed in their movements that adhesive is applied to alternate portions on opposite sides of the stri by said mutilated roll and said roll having the peripheral enlargement respectively, and said stripdisplacing means engaging the strip to displace the same as the mutilated portion of said mutilated roll is brought adjacent to the strip.

4. In a machine of the class described and I in. combination, a strip-rolling device; a tension for the strip; a rotatory mutilated adhesive-applying roll engageable with the strip between said tension and said strip rolling device; means intermittently engageable with the strip to displace the strip from its normal path, said means i being timed in its operation to so displace the strip as the mutilated portion of said roll is gageable with the strip to displace the strip from its normal path; a rotatory roll having an adhesive-applying peripheral enlargement engageable with the strip, said rolls being so timed in their movements'that adhesive is applied to alternate portions on opposite sides of the stripby said mutilated roll and said roll having the peripheral enlargement respectively; and an intermittently operating cutter engageable with the strip between said strip-rolling device and said strip-displacing means.

In testimony whereof, I have hereunto set my hand this 11th 'day of April. 1917.

FRANK C. CURTIS.- 

